Spring structure



- July 3, 1923. 1,460,601

H. A. PALMER SPRING STRUCTURE Filed Jan. 18, 1922 Patented July 3, 1923.

UNITED STATES PATENT HARRY A. PALMER, OF JACKSON, MICHIGAN, ASSIGNOR T0 REYNOLDS SPRING GOM- PAINY, OI JACKSON, MICHIGAN.

SPRING STRUCTURE Application filed January 18, 1922. Serial No; 530,645.

To all whom it may concern:

Be it known that, I, HARRY A. PALMER,

a citizen of the United States, residing at Jackson, in the county of Jackson and btate of Michigan, have invented new and useful Improvements in Spring Structures, of which the following is a specification.

This invention relates to spring structures Spring structures for automobile seats are generally built by manufacturers and sold without upholstering material applied to the structure. The purchaser of the spring structure applies an upholstered Pcovering thereto, or has it done by an upholsterer.

It is therefore one object of my invention to provide a spring structure to which the u holstering material may be readily app ied b an upholsterer or manufacturer of automo iles or the like.

Another object resides in the provision of a spring structure embodying among other characteristics a simple and inexpensive base frame to which the supporting bars which support the body springs may be attached in any suitable manner, and to which the marginal edge of the skirt or upholstered covering may be readily secured in position ainst undue wear or tearing and against accidental detachment incident to the rebound of the body springs subsequent to compression due to the weight of the rider, or because of uneven roadways.

With the above nd other objects in view, the present invention consists in the combination and arran ement of parts as-hereinafter more fully escribed and particularly ointed out in the appended claims, it being understood that changes may be made in the form, proportion, size and minor details without departing from the spirit of the invention or sacrificing any of the advanta es thereof.

n the drawings:

Fig. 1 is a fragmentary sectional-view illustratin the invention with the marginal edge of t e skirt in the groove ready to be secured therein.

Fig. 2 is a similar view illustrating the skirt secured in the groove of the base frame. 3 is a detail perspective view'of a portion of the base frame.

Fig. 4 is a plan VlGWrOf the base frame and spring supporting bars.

' ferring now more particularly to the convolutions of the body springs 8 are clamped, as indicated at 9. The ends of these spring supporting bars are flattened and turned into hooks 9 adapted to loosely hook over the upper wall 10 of the upper groove 5, whereby to support the body springs of the base frame. In the process of assembling the structure, the necessary number of sprin to make up a row have their base convo utions clamped in a pair of the spring supporting bars 7. The ends of the bars 7 are then formed into hooks and the bars with the springs secured thereto are hooked over the upper wall of the groove 5 along which upper wall, the spring supportin bars are slidably adjustable. The hooke ends of these bars may remain loose 'on the frame or after adjustment thereon they may be fixedly secured thereto, if desired, as by a pine ing operation.

An upholstering covering is indicated at 10 and may have 1ts marginal edge wrapped onto or have sewed thereinto a spline, such as wire, wood, fiber, cord or the like 12. The marginal edge of the skirt with or without the spline therein, is drawn over the upper'U-shaped member 5 and fitted in the lower groove 6 of the base frame when the lower wall 13 of the lower groove 6 is bent or forced upwardly toward the upper wall 14 of the lower groove 6 onto the skirt to substantially close the lower groove to bind the skirt within the said lower groove against accidental disconnection from the base frame.

to form hooks of double thickness adapted to rest upon the top of the baseframe and hook into the uppermost groove, springs mounted on said hars, and an upholfiering covering including a skirt having its margroove of the base frame, springs mounted 10 ginal edgesecured in the lowermost groove on said bars, and an upholstering covering of the base frame. ineluding a skirt adapted to conceal the 2. Inaspring structurena lHlSt frame eom hooked ends of said bars and having its posed of a strip of sheet metal folded upon marginal edge secured in the lowermost itself to form superimposed outwardly opengroove of the base frame.

ing grooves, pairs of spring supporting lmrs In testimony whereof I have hereunto each having hooks at, its ends adapted to nflixed my signature.

extend over and hook into the uppermost HARRY A. PALMER. 

